I want to thank all of you for your info. So, is my understanding correct?
Since I have already installed NinjaTrader with Futures and FXCM Forex data feeds, I will automatically get Futures Forex data. I can use that to do chart analysis and trade Nadex Forex spreads.
Even if I don't use Apex tools right now, the Forex data from NinjaTrader will be Futures Forex.
Finally, future Forex data is only used for volume analysis by the Indicators in the Apex tools.
And one more question, is Futures Forex data necessary to trade Nadex forex spreads? Can I use Spot forex data to trade Nadex forex spreads?
Sorry for all these questions, I'm a newbie and this site is so great and helpful.